Since my newly arrived Spanish light cavalry units have standard bearers - which is extremely unusual for my Napoleonic cavalry - I've had to make an effort to find out a bit more about the subject.
After an amusing afternoon playing around with PaintShop Pro, I've produced a couple of original efforts. I am not overly thrilled by the quality, but I believe that the real things were about 85cm high - you may include or exclude the fringes as you wish - so at approximately 1/72 scale they should print up OK. If they are of interest, please feel free to download and use them, but bear in mind that they are pretty much guesswork. The first one bears the arms of Merida (a town in Estremadura) and the second the royal seal of Ferdinand VII.
If anyone wishes to come up with the genuine regimental standard of the Husares de Estremadura and the Cazadores Voluntarios de Espana then I'll be delighted to use those instead!